Direct synthesis of oxygenates via partial oxidation of methane in the presence of O2 and H2 over a combination of Fe-ZSM-5 and Pd supported on an acid-functionalized porous polymer

초록

Aqueous-phase partial oxidation of methane over a combination of heterogeneous Fe-ZSM-5 and Pd catalysts was demonstrated in the presence of O-2 and H-2. Fe-ZSM-5 catalyst active for partial oxidation of methane with H2O2 was prepared by an ion-exchange method. For comparison, homogeneous Fe species (FeSO4) were also used as a catalyst for partial oxidation of methane. Several supported Pd catalysts for the direct synthesis of hydrogen peroxide from H-2 and O-2 were prepared using activated carbon (AC), AC treated with sulfuric acid (s-AC), as-synthesized hyper-crosslinked porous polymer (HCPP), HCPP with carboxylic group (c-HCPP), and HCPP with carboxylic and sulfonic groups (c-s-HCPP). Among them, the Pd catalyst supported on c-s-HCPP was effective for generating H2O2 in situ, which enabled methane oxidation over Fe-ZSM-5 without any leaching.

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